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Date: Mon, 15 Oct 2001 09:14:37 +0200 (CEST)
From: =?iso-8859-1?Q?Rasmus_B=F8g_Hansen?= <moffe@amagerkollegiet.dk>
To: "Mehta, Phoram Kirtikumar (UMKC-Student)" <pkm722@umkc.edu>
cc: <linux-net@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: network device driver
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On Sun, 14 Oct 2001, Mehta, Phoram Kirtikumar (UMKC-Student) wrote:

> 1. how does ifconfig and netstat get teh net statistics, where can i get
> the source to that funtion or source file.

They are from /proc/net/.

> 2. is there any funtion in the network device driver source by accessing
> which i can get the packets received or the type of packets. if not can
> anybody gimme some tips on how can i write it.

You can use a packet filter.

> i am trying to write or modify the eth device driver(3c509.c) in such a
> way that i can statistics of the traffic and then i also want to
> identify teh traffic. in short i want to incorporate a function in my
> driver which when acceseed would act as a sniffer/protocol analyzer .
> any help or advise will be appreciated.

Do it in userspace with packet filters. Look at tcpdump for example 
code.

Rasmus

-- 
-- [ Rasmus 'M?ffe' B?g Hansen ] ---------------------------------------
[...] Note that 120 sec is defined in the protocol as the maximum
possible RTT.  I guess we'll have to use something other than TCP
to talk to the University of Mars.
--------------------------------- [ moffe at amagerkollegiet dot dk ] --

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